SOLUTION: A pulley rotates through 50 degrees in one minute. how many rotations does the pulley make in an hour?
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Question 156823: A pulley rotates through 50 degrees in one minute. how many rotations does the pulley make in an hour?
Answer by nerdybill(7384) (Show Source): You can put this solution on YOUR website!
A pulley rotates through 50 degrees in one minute. how many rotations does the pulley make in an hour?
.
There are 60 minutes in an hour so:
50 * 60 = 3000 degrees
that's the total number of degrees the pulley has moved in an hour
.
Now, we know that a single rotation of the pulley is 360 degrees. So, to find how many rotations it made in an hour we divide the "total degrees moved" by 360.
.
3000/360 = 8.3333 rotations
or
8 and 1/3 rotations
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